PL.9 (DJ CONSTANT VARIETY MARK IN J SQUARE)(SG21 SPEC C4g) ON COVER. Envelope Clifton to London with good used die 2 1d pl.9 lettered DJ S.C.16, one shorter perforation at foot, tied CLIFTON/959 sideways duplex AU 3 1855. Stamp clearly shows MARK IN J SQUARE - present on imprimatur sheet but unlisted by SG. (Ref 106305).
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